Living in South Africa has had a very profound impact on my career.

The dinosaurs aren’t remembered for much more than their bones. When humanity’s gone, what do we give to this little planet that we’re on, and what could we do collectively, removing the pride?

Of the 1,223 new medicines developed between 1975 and 1997, just 13 were for tropical diseases. Only four sprang from the pharmaceutical industry’s efforts to cure humans. None were found on purpose

The man who is happy is fulfilling the purpose of existence

Favor comes because, for a brief moment in the great space of human change and progress, some general human purpose finds in him a satisfactory embodiment

Go forward in life with a twinkle in your eye and a smile on your face, but with great purpose in heart.

The purposes of the United States should not be doubted. The Security Council resolutions will be enforced – the just demands of peace and security will be met – or action will be unavoidable. And a regime that has lost its legitimacy will also lose its power.

One of the things that has helped me as much as any other is not how long I am going to live, but how much I can do while living.